Results 21 to 30 of about 39,292 (217)

Comparison of aroma properties of infant formulas: Differences in key aroma compounds and their possible origins in processing

Journal of Dairy Science, 2023
: Aroma is an important attribute of infant formula (IF). In this study, 218 volatiles and 62 odor-active compounds were detected from IF by dynamic headspace sampling combined with comprehensive 2-dimensional gas chromatography-olfactometry-mass ...
M.G. Yu, C.D. Zheng, T. Li, H.L. Song, L.J. Wang, W. Zhang, H. Sun, Q.G. Xie, S.L. Jiang   +8 more
doaj   +1 more source

Research on Odor Interaction between Aldehyde Compounds via a Partial Differential Equation (PDE) Model

Sensors, 2015
In order to explore the odor interaction of binary odor mixtures, a series of odor intensity evaluation tests were performed using both individual components and binary mixtures of aldehydes.
LuchunYan, Jiemin Liu, Chen Qu, Xingye Gu, Xia Zhao   +4 more
doaj   +1 more source

Characterization of volatile thiols in Chinese liquor (Baijiu) by ultraperformance liquid chromatography–mass spectrometry and ultraperformance liquid chromatography–quadrupole-time-of-flight mass spectrometry

Frontiers in Nutrition, 2022
Volatile thiols give a unique flavor to foods and they have been extensively studied due to their effects on sensory properties. The analytical assay of volatile thiols in food is hindered by the complexity of the matrix, and by both their high ...
Yan Yan, Yan Yan, Jun Lu, Yao Nie, Changwen Li, Shuang Chen, Yan Xu   +6 more
doaj   +1 more source

Additivity between Key Odorants in Pig House Air

Atmosphere, 2021
The verification of odor abatement technologies for livestock production based on chemical odorants requires a method for conversion into an odor value that reflects the significance of the individual odorants. The aim of the present study was to compare
Michael Jørgen Hansen, Anders Peter S. Adamsen, Chuandong Wu, Anders Feilberg   +3 more
doaj   +1 more source

Variation of Aroma Components of Pasteurized Yogurt with Different Process Combination before and after Aging by DHS/GC-O-MS

Molecules, 2023
Pasteurized yogurt is a healthy yogurt that can be stored in ambient temperature conditions. Dynamic headspace sampling (DHS) combined with gas chromatography-olfactory mass spectrometry (GC-O-MS), sensory evaluation, electronic nose (E-nose), and ...
Mu Zhao, Hongliang Li, Dongjie Zhang, Jie Li, Rong Wen, Hairan Ma, Tingting Zou, Yaqiong Hou, Huanlu Song   +8 more
doaj   +1 more source

An Odor Interaction Model of Binary Odorant Mixtures by a Partial Differential Equation Method

Sensors, 2014
A novel odor interaction model was proposed for binary mixtures of benzene and substituted benzenes by a partial differential equation (PDE) method. Based on the measurement method (tangent-intercept method) of partial molar volume, original parameters ...
Luchun Yan, Jiemin Liu, Guihua Wang, Chuandong Wu   +3 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Use of a Modified Vector Model for Odor Intensity Prediction of Odorant Mixtures

Sensors, 2015
Odor intensity (OI) indicates the perceived intensity of an odor by the human nose, and it is usually rated by specialized assessors. In order to avoid restrictions on assessor participation in OI evaluations, the Vector Model which calculates the OI of ...
Luchun Yan, Jiemin Liu, Di Fang
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

OAV-Based Source Characterization of Designated Odor Compounds in Long-Term Continuous Monitoring Data with Severe Missingness

Atmosphere
Odor management requires consideration of both compound concentrations and olfactory impacts determined by odor threshold concentrations. This study evaluated missing-data structures, interpolation performance, odor activity value (OAV)-based odor ...
Chae-ho Kim, Dong-chul Shin, Myeong-woon Kim   +2 more
doaj   +1 more source